No I'm saying don't take it, becasue it causes water retention, which won't help with definition.
As you appear to have been getting the results you want, I'd persevere with what you're doing for now, as it seems to be working.
If however you get about 4-5 weeks of consistant plateauing, then consider minor changes to diet, first before doing anything with training.
Most times when people plateau, it's not training that's to fault unless the training the person is doing is partially or completely poor. If a training regime is good, then a plateau in most cases results from dietry things.